Table 8. Diagnostic and Maintenance Function Codes and Descriptions (continued)
Function Code J - Fast Read/Write Test
Approximate Run Time = 5 minutes
Total Number of Loops = 10
Function Code
J
completes tests to ensure that the drive can read from and write to tape.
The diagnostic loops 10 times. Press Eject to stop the diagnostic and exit maintenance mode. Pressing Eject
once aborts the test at the end of the current test loop. Pressing Eject twice aborts the test immediately.
Attention: For this test, insert only a scratch (blank) data cartridge or a cartridge that might be
overwritten. During the test, the drive overwrites the data on the cartridge.
Note: If you inserted an invalid tape cartridge (see “Data cartridges” on page 21), error code
J
or
7
displays
in the SCD. If you inserted a write-protected cartridge, or the media has read-only compatibility (see Table 5
on page 21 ), error code
P
displays in the SCD. In either case, the tape drive unloads the cartridge and exits
Maintenance mode after the cartridge is removed.
1. Ensure that there is no cartridge in the drive.
2. Press Eject 3 times within an interval of 2 seconds. The fault LED becomes solid amber, which means that
the drive is in maintenance mode.
3. Press Eject once per second until
J
appears in the single-character display. If you cycle past
J
, continue
to press Eject until it reappears.
4. Press and hold Eject for 3 or more seconds, then release it to select the function. The single-character
display changes to a flashing
C
.
5. Within 60 seconds, insert a scratch data cartridge that is not write-protected.
Note: If you wait longer than 60 seconds to load a cartridge, the drive automatically exits maintenance
mode. If you insert a write-protected cartridge, the tape drive displays a
P
and retain the cartridge until it
is manually ejected. Once the cartridge is ejected and removed, the tape drive exits maintenance mode.
After you insert the cartridge, the single-character display changes to a flashing
J
, and the tape drive runs the
tests.
Note: If you inserted an invalid cartridge, error code
7
appears in the single-character display. The tape drive
retains the cartridge until it is manually ejected. Once ejected, the tape drive exits maintenance mode.
• If no error is detected, the test loops and begins again. To stop the loop, press Eject for 1 second and
release. When the loop ends, the drive rewinds, unloads the tape, and exits maintenance mode.
• If an error is detected, the fault LED flashes amber, then the tape drive posts an error code to the single-
character display. To determine the error, locate the code in “Descriptions and corrective actions” on page
38. Once the cartridge is manually ejected and removed, the tape drive exits maintenance mode.
Chapter 4. Troubleshooting 35
